I bought a couple mags from GMW, New made SKS. I got a mag that was rusty. Had blotches of rust on it. They said send it back but its not really worth it. I steel wooled it and ran a bit of blueing on the body. Oiled it up but it was supposed to be new. It was clearly visible through the plastic and the plastic had rust on it. You could see the brown from 10 feet.